Let me answer your first question. The answer is no. Why? I dont know but you can not go thru the World Jrs, Tourney, get drafted and be on a team with the current rosters as it was the beginning of the season in Oct. Cant be done. I know, it sucks.
If you want to play BAP with the current NHL rosters, then you must forgo all of your progress and begin a new career in the NHL and select a team and you’ll be a “free agent”. The bad part about it is, you will loose everything you gained when you went thru the months to the draft and offseason. Those are gone and you begin as the default rookie and have to slowwwwwwly earn everything back. Don’t ask why this is, it just is.
As you put your hands up in the air, you must be wondering why is that? I’ll tell you. When you begin at the World Jrs, notice the date is Jan 2 or 3 2025. So EA decided the games rosters are from this time. Once the draft hits, you get drafted and all of the free agents get sorted and signed according to what the computer says. So you must choose. 1. Accept your progression but sacrifice a current NHL rosters or 2. Sacrifice your progression but accept that you will have current NHL rosters.
EA wont have you have the best of both worlds. Your choice.